File "/private/var/mobile/Containers/Shared/AppGroup/B86CEE4E-E4A9-4BB4-9CA7-6E13BDA2C2A4/Pythonista3/Documents/site-packages/pytube/main.py", line 90, in prefetch_init
"""
File "/private/var/mobile/Containers/Shared/AppGroup/B86CEE4E-E4A9-4BB4-9CA7-6E13BDA2C2A4/Pythonista3/Documents/site-packages/pytube/main.py", line 117, in init
stream_maps.append('adaptive_fmts')
File "/private/var/mobile/Containers/Shared/AppGroup/B86CEE4E-E4A9-4BB4-9CA7-6E13BDA2C2A4/Pythonista3/Documents/site-packages/pytube/mixins.py", line 76, in apply_descrambler
for i in stream_data[key].split(',')
KeyError: 'url_encoded_fmt_stream_map'

This version also works fine on a Mac. Can anyone see what might be causing this problem?